always get an error message. "Object reference not set to an instance of an object"
Can anyone how to solve this?
Here is my code. - private void CreateNewWordFile(string sourceFileName,string destinationFileName,string stratBookmarkName,string endBookmarkName)
-
{
-
// Declaring the object variables we will need later
-
object varFileName = fileName;
-
object varFalseValue = false;
-
object varTrueValue = true;
-
object varMissing = Type.Missing;
-
// Create a reference to MS Word application
-
Microsoft.Office.Interop.Word.Application varWord = new Microsoft.Office.Interop.Word.Application();
-
-
// Creates a reference to a word document
-
Microsoft.Office.Interop.Word.Document varDoc = varWord.Documents.Open(ref varFileName, ref varMissing, ref varFalseValue, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing);
-
// Activate the document
-
varDoc.Activate();
-
-
string test = varDoc.Bookmarks.Count.ToString();
-
-
//BOOK MARK FOR START OF SELECTION
-
object oBookmarkStart = "bookmark1";
-
object oRngoBookMarkStart = varDoc.Bookmarks.get_Item(ref oBookmarkStart).Range.Start;
-
-
//BOOK MARK FOR END OF SELECTION
-
object oBookmarkEnd = "bookmark2";
-
object oRngoBookMarkEnd = varDoc.Bookmarks.get_Item(ref oBookmarkEnd).Range.Start;
-
-
//SETTING THE RANGE ON THE BOOKMARK BETWEEN TWO BOOKMARKS
-
Word.Range rngBKMarkSelection = varDoc.Range(ref oRngoBookMarkStart, ref oRngoBookMarkEnd);
-
-
//SELECTING THE TEXT
-
rngBKMarkSelection.Select();
-
rngBKMarkSelection.Copy();
-
-
CreateNewDocument(destinationFileName);
-
InsertTableIntoNewDocument(destinationFileName);
-
InsertDataIntoTable(destinationFileName, rngBKMarkSelection);
-
-
//CLOSING THE FILE
-
varDoc.Close(ref varFalseValue, ref varMissing, ref varMissing);
-
//QUITTING THE APPLICATION
-
varWord.Quit(ref varMissing, ref varMissing, ref varMissing);
-
}
-
private void InsertDataIntoTable(string destinationFileName, Word.Range rngBKMarkSelection)
-
{
-
try
-
{
-
// Declaring the object variables we will need later
-
object varFileName = destinationFileName;
-
object varFalseValue = false;
-
object varTrueValue = true;
-
object varMissing = Type.Missing;
-
// Create a reference to MS Word application
-
Microsoft.Office.Interop.Word.Application varWord = new Microsoft.Office.Interop.Word.Application();
-
-
// Creates a reference to a word document
-
Microsoft.Office.Interop.Word.Document varDoc = varWord.Documents.Open(ref varFileName, ref varMissing, ref varFalseValue, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing);
-
// Activate the document
-
varDoc.Activate();
-
-
//error code here
-
object oUpperHeadingLevel = "1";
-
object oLowerHeadingLevel = "1";
-
object oTOCTableID = varDoc.Tables[1].ID.ToString();
-
varDoc.TablesOfContents.Add(rngBKMarkSelection, ref varTrueValue, ref oUpperHeadingLevel,
-
ref oLowerHeadingLevel, ref varMissing, ref oTOCTableID, ref varTrueValue,
-
ref varTrueValue, ref varMissing, ref varTrueValue, ref varTrueValue, ref varTrueValue);
-
//error code here
-
-
//THE LOCATION WHERE THE FILE NEEDS TO BE SAVED
-
object oSaveAsFile = destinationFileName;
-
varDoc.SaveAs(
-
ref oSaveAsFile, ref varMissing, ref varMissing, ref varMissing, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing);
-
-
//CLOSING THE FILE
-
varDoc.Close(ref varFalseValue, ref varMissing, ref varMissing);
-
//QUITTING THE APPLICATION
-
varWord.Quit(ref varMissing, ref varMissing, ref varMissing);
-
}
-
catch (Exception varE)
-
{
-
MessageBox.Show("Error:\n" + varE.Message, "Error message");
-
}
-
}
6  2342 
What is the line number?
62 to 69
Thank you very much.
Debug line by line and find the exact line number where the exception was thrown using F11.
Debug line by line and find the exact line number where the exception was thrown using F11.
Thanks for your suggestion.
I just solve the problem.
below is my source code. - private void SelectWantedData(string fileName, string startBookmark, string endBookmark)
-
{
-
try
-
{
-
// Declaring the object variables we will need later
-
object varFileName = fileName;
-
object varFalseValue = false;
-
object varTrueValue = true;
-
object varMissing = Type.Missing;
-
// Create a reference to MS Word application
-
Microsoft.Office.Interop.Word.Application varWord = new Microsoft.Office.Interop.Word.Application();
-
-
// Creates a reference to a word document
-
Microsoft.Office.Interop.Word.Document varDoc = varWord.Documents.Open(
-
ref varFileName, ref varMissing, ref varFalseValue, ref varMissing, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing,
-
ref varMissing);
-
// Activate the document
-
varDoc.Activate();
-
-
string test = varDoc.Bookmarks.Count.ToString();
-
-
//BOOK MARK FOR START OF SELECTION
-
object oBookmarkStart = startBookmark;
-
object oRngoBookMarkStart = varDoc.Bookmarks.get_Item(ref oBookmarkStart).Range.End;
-
-
//BOOK MARK FOR END OF SELECTION
-
object oBookmarkEnd = endBookmark;
-
object oRngoBookMarkEnd = varDoc.Bookmarks.get_Item(ref oBookmarkEnd).Range.Start;
-
-
//SETTING THE RANGE ON THE BOOKMARK BETWEEN TWO BOOKMARKS
-
Word.Range rngBKMarkSelection = varDoc.Range(ref oRngoBookMarkStart, ref oRngoBookMarkEnd);
-
-
//SELECTING THE TEXT
-
rngBKMarkSelection.Select();
-
rngBKMarkSelection.Copy();
-
-
//CLOSING THE FILE
-
varDoc.Close(ref varFalseValue, ref varMissing, ref varMissing);
-
//QUITTING THE APPLICATION
-
varWord.Quit(ref varMissing, ref varMissing, ref varMissing);
-
}
-
catch (Exception varE)
-
{
-
MessageBox.Show("Error:\n" + varE.Message, "Error message");
-
}
-
}
-
private void InsertDataIntoTable(string destinationFileName)
-
{
-
try
-
{
-
// Declaring the object variables we will need later
-
object varFileName = destinationFileName;
-
object varFalseValue = false;
-
object varTrueValue = true;
-
object varMissing = Type.Missing;
-
// Create a reference to MS Word application
-
Microsoft.Office.Interop.Word.Application varWord = new Microsoft.Office.Interop.Word.Application();
-
-
// Creates a reference to a word document
-
Microsoft.Office.Interop.Word.Document varDoc = varWord.Documents.Open(
-
ref varFileName, ref varMissing, ref varFalseValue, ref varMissing, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing,
-
ref varMissing);
-
// Activate the document
-
varDoc.Activate();
-
-
//paste data
-
Word.Cell cell = varDoc.Tables[1].Cell(1, 1);
-
cell.Range.Paste();
-
-
//THE LOCATION WHERE THE FILE NEEDS TO BE SAVED
-
object oSaveAsFile = destinationFileName;
-
varDoc.SaveAs(
-
ref oSaveAsFile, ref varMissing, ref varMissing, ref varMissing, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing,
-
ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing, ref varMissing);
-
-
//CLOSING THE FILE
-
varDoc.Close(ref varFalseValue, ref varMissing, ref varMissing);
-
//QUITTING THE APPLICATION
-
varWord.Quit(ref varMissing, ref varMissing, ref varMissing);
-
}
-
catch (Exception varE)
-
{
-
MessageBox.Show("Error:\n" + varE.Message, "Error message");
-
}
-
}
You really should consider NOT using objects for every single variable you use.
You really should consider NOT using objects for every single variable you use.
Do you have any idea how to rewrite the codes?
The discussion is open to suggestions.
Many thanks for your replying.
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